Mailman 3 June 2008 - Python-announce-list

Training Class in July
by Steve Holden 04 Jun '08

04 Jun '08

Holden Web is holding the second of its public "Introduction to Python" classes on July 8-10 in Springfield, VA (just outside Washington, DC). The class is described briefly at http://holdenweb.com/py/introclass/ and the current schedule is at http://holdenweb.com/py/training/ Bookings are now being accepted through our web site. Please contact info(a)holdenweb.com for multi-student discount details. Comments from the students on our March class: "Great class. Very informative" JSc "This tied Python together and now I can go learn on my own until I hit the next plateau" JSa "Excellent course, lots of good information" VB "It was a good course and the price was just right" AW -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/

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ANN: Sydebar 1.0 - A browser sidebar generator for Python documentation
by Remy Blank 03 Jun '08

03 Jun '08

Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable I am pleased to announce the first release of Sydebar, a browser sidebar = generator for Python documentation. For the impatient, sample outputs=20 for all Python versions ever released can be found here: http://c-space.org/download/Sydebar/samples/ The program generates a single, self-contained XHTML file for a specific = Python documentation URL, which can be local or remote. The generated=20 file is loaded into the sidebar of some popular browsers (tested on=20 Firefox and Opera, Mozilla should work as well), and presents a tabbed=20 interface with one page for each of the following documentation sections:= * Tutorial * Language reference * Library reference * Python/C API * Extending and embedding * Global module index Each page shows a collapsible tree of chapters, with links opening the=20 corresponding section in the main browser pane. The global module index=20 features an incremental search functionality with fast keyboard navigatio= n. Moreover, a search page allows performing searches on various subsets of = python.org (specific parts of the website, PEPs, newsgroups, PyPI and=20 the issue tracker). The documentation and PyPI entry can be found here: http://c-space.org/software/Sydebar.html http://pypi.python.org/pypi/Sydebar I would like to mention that Sydebar was inspired by python-sidebar from = Daniel Lundin at Edgewall Software, and even though I didn't borrow any=20 code from there, the layout does bear quite some resemblance. Feedback is very welcome. Thanks for reading! -- Remy Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) iEYEARECAAYFAkhFvFEACgkQCeNfIyhvXjISEACgmUXSorHaZ7JjNC2AqTuJtWod BAgAn3g/97+9cI9m5n2QBpvcmtxQnGB0 =IQ6Q -----END PGP SIGNATURE-----

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Shed Skin (restricted) Python-to-C++ Compiler 0.0.28
by Mark Dufour 03 Jun '08

03 Jun '08

Hi all, I have just released Shed Skin 0.0.28, with the following changes. Thanks to those mentioned for helping out! - basic 'socket' support (Michael Elkins) - support for os.{popen3, popen4} under UNIX (Jaroslaw Tworek) - support for time.strptime under Windows (David Marek) - options for changing output dir, disabling annotation (Dave Tweed) - support for 'cmp' and 'reverse' arguments of 'sorted' and 'list.sort' - fixes for cross-module default arguments - important fixes for type inference and inheritance - restore compatibility with Python 2.3 - many minor bugfixes I would really like to receive more bug reports. Please try out the new version, and let me know about any problems. With the socket support, 15 common modules are now largely supported. For a 0.1 release, I'd really like to have support for one more module: datetime. Thanks to the GHOP, there is a type model already (lib/datetime.py), so we only still need a C++ implementation.. Thanks, Mark Dufour. -- "One of my most productive days was throwing away 1000 lines of code" - Ken Thompson

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Python-URL! - weekly Python news and links (Jun 3)
by Gabriel Genellina 03 Jun '08

03 Jun '08

QOTW: "PS: in some ways it's interesting and relevant that there has been no discussion on psf-members of Google's AppEngine, which many people I've talked to think is the most important thing that's ever happened to Python ever." - David Ascher Alternatives for a multi dimensional dictionary: http://groups.google.com/group/comp.lang.python/browse_thread/thread/910564… Threads and memory usage: http://groups.google.com/group/comp.lang.python/browse_thread/thread/44c20f… Should Python provide "real" data hiding? http://groups.google.com/group/comp.lang.python/browse_thread/thread/188467… In response to a requirement for a data structure with fast inserts, no duplicates, and sorted items, several alternatives emerge: http://groups.google.com/group/comp.lang.python/browse_thread/thread/ab429c… How to read utf-8 encoded input from sys.stdin: http://groups.google.com/group/comp.lang.python/browse_thread/thread/44bb63… Looking for something similar to "classic" ASP web development in Python - and why it may not be a good idea: http://groups.google.com/group/comp.lang.python/browse_thread/thread/9bd633… ======================================================================== Everything Python-related you want is probably one or two clicks away in these pages: Python.org's Python Language Website is the traditional center of Pythonia http://www.python.org Notice especially the master FAQ http://www.python.org/doc/FAQ.html PythonWare complements the digest you're reading with the marvelous daily python url http://www.pythonware.com/daily Mygale is a news-gathering webcrawler that specializes in (new) World-Wide Web articles related to Python. http://www.awaretek.com/nowak/mygale.html While cosmetically similar, Mygale and the Daily Python-URL are utterly different in their technologies and generally in their results. Just beginning with Python? This page is a great place to start: http://wiki.python.org/moin/BeginnersGuide/Programmers The Python Papers aims to publish "the efforts of Python enthusiats": http://pythonpapers.org/ The Python Magazine is a technical monthly devoted to Python: http://pythonmagazine.com Readers have recommended the "Planet" sites: http://planetpython.org http://planet.python.org comp.lang.python.announce announces new Python software. Be sure to scan this newsgroup weekly. http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce Python411 indexes "podcasts ... to help people learn Python ..." Updates appear more-than-weekly: http://www.awaretek.com/python/index.html The Python Package Index catalogues packages. http://www.python.org/pypi/ The somewhat older Vaults of Parnassus ambitiously collects references to all sorts of Python resources. http://www.vex.net/~x/parnassus/ Much of Python's real work takes place on Special-Interest Group mailing lists http://www.python.org/sigs/ Python Success Stories--from air-traffic control to on-line match-making--can inspire you or decision-makers to whom you're subject with a vision of what the language makes practical. http://www.pythonology.com/success The Python Software Foundation (PSF) has replaced the Python Consortium as an independent nexus of activity. It has official responsibility for Python's development and maintenance. http://www.python.org/psf/ Among the ways you can support PSF is with a donation. http://www.python.org/psf/donate.html Kurt B. Kaiser publishes a weekly report on faults and patches. http://www.google.com/groups?as_usubject=weekly%20python%20patch Although unmaintained since 2002, the Cetus collection of Python hyperlinks retains a few gems. http://www.cetus-links.org/oo_python.html Python FAQTS http://python.faqts.com/ The Cookbook is a collaborative effort to capture useful and interesting recipes. http://aspn.activestate.com/ASPN/Cookbook/Python Many Python conferences around the world are in preparation. Watch this space for links to them. Among several Python-oriented RSS/RDF feeds available are http://www.python.org/channews.rdf http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi http://python.de/backend.php For more, see http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all The old Python "To-Do List" now lives principally in a SourceForge reincarnation. http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse http://www.python.org/dev/peps/pep-0042/ The online Python Journal is posted at pythonjournal.cognizor.com. editor(a)pythonjournal.com and editor(a)pythonjournal.cognizor.com welcome submission of material that helps people's understanding of Python use, and offer Web presentation of your work. del.icio.us presents an intriguing approach to reference commentary. It already aggregates quite a bit of Python intelligence. http://del.icio.us/tag/python *Py: the Journal of the Python Language* http://www.pyzine.com Archive probing tricks of the trade: http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100 http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.pyth… Previous - (U)se the (R)esource, (L)uke! - messages are listed here: http://www.ddj.com/topic/python/ (requires subscription) http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&s… http://purl.org/thecliff/python/url.html (dormant) or http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lan… There is *not* an RSS for "Python-URL!"--at least not yet. Arguments for and against are occasionally entertained. Suggestions/corrections for next week's posting are always welcome. E-mail to <Python-URL(a)phaseit.net> should get through. To receive a new issue of this posting in e-mail each Monday morning (approximately), ask <claird(a)phaseit.net> to subscribe. Mention "Python-URL!". Write to the same address to unsubscribe. -- The Python-URL! Team-- Phaseit, Inc. (http://phaseit.net) is pleased to participate in and sponsor the "Python-URL!" project. Watch this space for upcoming news about posting archives.

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KPAX CMS - The human CMS from another planet
by Massimo Di Pierro 03 Jun '08

03 Jun '08

Hello everybody, I just released the KPAX CMS 1.0 beta (based on web2py). Create web pages, wikis with locking and versioning, blogs, chats, surveys, video/audio streams. No programming required. Runs off a USB drive too. The name is temporary. Here is a screencast/tutorial http://www.vimeo.com/1098656 Download from http://mdp.cti.depaul.edu/appliances Massimo Some features: Lots of a Ajax for user friendly interaction. Granular Access Control mechanism based on group membership. Users can create and join groups. Group owner can require approval of memberships applications. Users can post news and turn them into RSS feeds. Users can create folders and insert pages in folders. Users can create surveys and assignments (including anonymous). Users can create and join chat lines. Chats synchronously and asynchronously, like a discussion board. Folder pages can be public web pages, public or private wikis, can accept comments, and can contain documents. Pages have versions and can be compared with previous versions. Wiki pages have locking so no conflicts. Documents in pages can be media files. If they are large they are streamed. Media files are played by the built-in flash player. Movies can be played full-screen. Assignment are automatically graded and generate reports and statistics. WYSIWYG editor (similar to but easer than Word) System errors result in tickets issued to the visitors. All errors/ tickets are logged. Web based administrative interface. Web based database administrative interface. Secure. Secure cookies Server-side sessions. Server-side form validation. No SQL Injection flaws. Scalable using threads and/or processes (multiple installation behind load-balancer). Uploaded documents/media can be stored in filesystem or database. Server runs on Windows, Mac, and Linux. Client/Ajax code compatible with IE6+, Firefix 2+, Safari 3+. Works with Sqlite (built-in), MySql, PostgreSql, and Oracle. Transaction safe. SQL generated via meta-programming. Works with any CGI, FastCGI and WSGI server including CherryPy’s (built-in), Apache, and Lighttpd. Written in Python. The code is concise and readable. All web forms are automatically generated. Automatic migrations for easy upgrade.

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GOZERBOT 0.8.1.0 released
by Bart Thate 02 Jun '08

02 Jun '08

0.8.1.0 is here and can be downloaded from http://gozerbot.org new features: * ssl connections are now supported * third party software included into gozerbot: o feedparser (used by RSS) .. makes atom feeds possible o simplejson (used by COLLECTIVE) o BeautifulSoup (used to parse webpages) * renewed RSS plugin * renewed collective plugin * renewed webserver plugin .. new webserver API * tcp.py notification plugin as well as a totcp.py client program the following plugins were removed from the main distribition: * autovoice * away * convert * country * event * grab * jcoll * probe if you are using one of these plugins use install-plug <plugin> to install them from the plugin server. any problems with the bot can be reported on #dunkbots on IRCnet or email bth...(a)gmail.com debian package and freebsd port will follow have fun ;] about gozerbot: Requirements * a shell * python 2.4 or higher * if you want to remotely install plugins: the gnupg module * if you want mysql support: the py-MySQLdb module * if you want jabber support: the xmpppy module Why gozerbot? * provide both IRC and Jabber support * user management by userhost .. bot will not respond if it doesn't know you * fleet .. use more than one bot in a program (list of bots) * use the bot through dcc chat * fetch rss feeds * remember items * relaying between bots * program your own plugins * run the builtin webserver * query other bots webserver via irc * serve as a udp <-> irc or jabber notification bot * mysql and sqlite support

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ANN: equivalence 0.1
by George Sakkis 02 Jun '08

02 Jun '08

Equivalence is a class that can be used to maintain a partition of objects into equivalence sets, making sure that the equivalence properties (reflexivity, symmetry, transitivity) are preserved. Two objects x and y are considered equivalent either implicitly (through a key function) or explicitly by calling merge(x,y). Get it from pypi: http://pypi.python.org/pypi/equivalence/ Example ======= Say that you are given a bunch of URLs you want to download and eventually process somehow. These urls may contain duplicates, either exact or leading to a page with the same content (e.g. redirects, plagiarized pages, etc.). What you'd like is identify duplicates in advance so that you can process only unique pages. More formally, you want to partition the given URLs into equivalence sets and pick a single representative from each set. Getting rid of identical URLs is trivial. A more general case of URLs that can be easily identified as duplicates can be based on some simple regular expression based heuristics, so that for instance 'http://python.org/doc/' and 'www.python.org/doc/index.html' are deemed equivalent. For this case you may have a normalize(url) function that reduces a URL into its "stem" (e.g. 'python.org/doc') and use this as a key for deciding equivalence. This is fine but it still leaves quite a few URLs that cannot be recognized as duplicates with simple heuristics. For these harder cases you may have one or more "oracles" (an external database, a page comparison program, or ultimately a human) that decides whether pages x and y are equivalent. You can integrate such oracles by explicitly declaring objects as equivalent using Equivalence.merge(x,y). Both implicit (key-based) and explicit information are combined to maintain the equivalence sets. For instance: >>> from equivalence import Equivalence >>> dups = Equivalence(normalize) # for an appropriate normalize(url) >>> dups.merge('http://python.org/doc/', 'http://pythondocs.com/') >>> dups.are_equivalent('www.pythondocs.com/index.htm', 'http://python.org/doc/index.html') >>> True You can find more about the API in the included docs and the unittest file. Regards, George

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[ANN] Python Summer Courses 2008 in Germany
by Mike Müller 01 Jun '08

01 Jun '08

I am pleased to announce Python courses in Germany this summer. The courses will be in Leipzig, Germany from July 21 to 25, 2008. (http://www.python-academy.com/courses/python_summer_course.html) (1) "Python for Programmers" introduces Python to programmers without or with little knowledge of Python. This course will be given on July 21 and 22, 2008. For course details see: http://www.python-academy.com/courses/python_course_programmers.html (2) "Python for Scientists and Engineers" will be held from July 23 -- 25, 2008. A detailed course outline can be found here: http://www.python-academy.com/courses/python_course_scientists.html Both courses can be booked individually or jointly. Please register here: http://www.python-academy.com/courses/dates.html You can take advantage of being in Leipzig to attend the first EuroSciPy conference on July 26 and 27, 2008. For more details see: http://www.scipy.org/EuroSciPy2008 Kind regards, Mike Müller (Course Instructor)

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pyspread 0.0.7
by Martin Manns 01 Jun '08

01 Jun '08

pyspread 0.0.7 has been released. -- New features: + CSV import dialog with preview grid Bug fixes: + setup.py now installs correctly into a sub-folder (tested for Linux and WinXP). -- About: pyspread is a spreadsheet that accepts a pure python expression in each cell. -- Highlights: + No non-python syntax add-ons + Access to python modules from cells + 3D grid + Numpy object array for representation of string entry into grid cell + Numpy object array for representation of eval function array + Cell access via slicing of numpy function array + X, Y, and Z yield current cell location for relative reference Requires: Python >=2.4, Numpy 1.0.4, and wxPython 2.8.7.1. License: GPL Project page: http://pyspread.sourceforge.net Best Regards Martin

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ANN: PyQwt-5.1.0 released
by Gerard Vermeulen 01 Jun '08

01 Jun '08

What is PyQwt ( http://pyqwt.sourceforge.net ) ? - it is a set of Python bindings for the Qwt C++ class library which extends the Qt framework with widgets for scientific and engineering applications. It provides a 2-dimensional plotting widget and various widgets to display and control bounded or unbounded floating point values. - it requires and extends PyQt, a set of Python bindings for Qt. - it supports the use of PyQt, Qt, Qwt, and optionally NumPy or SciPy in a GUI Python application or in an interactive Python session. - it runs on POSIX, Mac OS X and Windows platforms (practically any platform supported by Qt and Python). - it plots fast: fairly good hardware allows a rate of 100,000 points/second. (PyQwt with Qt-3 is faster than with Qt-4). - it is licensed under the GPL with an exception to allow dynamic linking with non-free releases of Qt and PyQt. The most important new features of PyQwt-5.1.0 are: - support for Qwt-5.1.0. - support for PyQt-4.4.2 and SIP-4.7.6. - support for Qt-4.4. - the CartesianDemo.py, MaskedDataDemo.py, PickerDemo.py examples. The most important bug fixes in PyQwt-5.1.0 are: - fixed QwtPicker::stateMachine() to allow for subclassing of QwtPicker in Python. PyQwt-5.1.0 supports: 1. Python-2.5, or -2.4. 2. PyQt-3.17. 3. PyQt-4.4, PyQt-4.3, or PyQt-4.2. 3 SIP-4.7, or SIP-4.6. 4. Qt-3.3, or Qt-3.2. 5. Qt-4.4, Qt-4.3, or Qt-4.2. 6. Qwt-5.1, or Qwt-5.0. 7. Recent versions of NumPy, numarray, and/or Numeric. Enjoy -- Gerard Vermeulen

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